Electric elevator.



' E'. H. VOGEL. ELEGTRIG ELEVATOR.

APPLICATION FILED NOV. 16, 1903.

PATBNTED JULY 19, 1904.

PATENTED JULY 19., f1 904.

E. H. VUGEL.

.ELECTRIC ELBVATOR.

APPLICATION FILED Nov.1e. 190s.

2 SHEETS-SHEET 2.

N0 MODEL.

mams. Mchn/f l No. 765,348.

Patented July 19, 1904- PATENT Orricn.

ERNEST H. VOGEL, OF NEW YORK, N. Y.

ELECTRIC ELEVATOR.

I SPECFICATION forming part of Letters Patent No.f765,348, dated July 19, 1904.

l i Application filed November 16, 1903. Serial No. 181,281.` (No model.)

To all whom it may con/cern: ,Be-itknown that I, ERNEST H..V0GEL, a citi zen of the United States,residing in the city I of` New York, borough of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Electric Elevators, of which the following ,isja `specification suiiicient to enable others l .skilled in the art to which the invention apro'pertainslto make and use the same.

n My invention relates to elevators and lifts .operated by electric motors in conjunction eitherdirectly Aor indirectly with screw- `.threads or worms. My object is to overcome f5 the `practical objections heretofore attendant upon the use of screw-threads for th is purpose and 1to attain a safe smooth-running device by which the elevator may be operated with less power, the frictional resistance being reduced 2o tothe minimum.'

The invention consists, essentially, in a relatively large screw'drurn actuated internally by a motor and mechanismsupported on the carorp`latform. the screw thread or way be'- 2 5 'fing formed upon the periphery of the drum. -'By.thi`s means am enabled to use a thread or way of comparatively low pitch or grade and 'to use engaging wheels of large diameter, `soxthat for a given speed of motion imparted 3o to .thecar or platform a relatively slow niotion 'of the operative parts is sufficient. In fact, l attain all the advantages involved in the use of .wheels of large diameter and broad rtread upon a road of slight incline or grade,

' 3 5 andhence not only attain a smooth even niotion with the minimum of power, but also obviate the excessive wear and the danger involvedin the use of a plurality of screws or worms of high pitch engaging with wheels of 4o small diameter.

' The motion and actuating parts being all inclosed-within the drum are isolated and prol -tected thereby and are less exposed to injury or derangement.

1 My invention also includes certain features in the construction and arrangement of parts hereinafter described and claimed specifically.`

In the accompanying drawings, Figure 1 is a vertical sectional elevation; Fig. 2, a section on plane of lino 2 2, 3; Fig. 3, a

or lift on the under side of which is mounted the electric motor M, to the armature-shaft y of which is secured thepinion m. This pinion ml meshes into intermediate gears g g, mounted upon studs g g', secured to the under side of the platform P and meshing also with the internal annular rack lr, formed'upon or made integral with the drum D.

Above the rack fr the internal surface of the drum D is formed with an annular groove al', forming the tread or way for a series of horizontal rollers i z., fulcrumed on studs or standards L' t upon the bottom of the platform. These horizontal rollers steady the drum D centrally and internally and preserve its aline ment with the platform P and the operative parts. l

c o are truncated conical rollers mounted in bearings c' con the under side of the platform P and traveling on the inclined annular track t, integral with the drum .D and preferably arranged onthe interior surface, as shown, although, if preferred, it may be formed upon v the extreme upper edge of the drum with like result.

S is a spiral screw-thread way or track formed integral with or upon the periphery of the drum l) and engaging with the wheels lV lV, pivotally supported upon the uprights U U. It will be noted that by forming the spiral way S upon the periphery of the drum D, which is necessarily of a' diameter at least as large as the width of thc elevator and may be made larger, if desired, l am enabled to obtain a slight grade or pitch and at the saine time employ wheels lV lV of large tread and diameter as compared with those heretofore used, thereby reducing resistance and econdmy of power while insuring an even uniform motion.

In order to guard against accident in the event of one or more of thewheels lV lV or journals breaking from place, l prefer to form the screwway D with a rib or tongue s, which 100 protrudes into a groove n, formed for their reception in the inner face of4 each upright U. rhus the drum I) will be supported independent of' the wheels ll' Il' in case of necessityY and sustained in proper relation to the floor of the car or platform P until the damage can be repaired.

a a are vertical guides upon the car or platform I), which engage the wheels IV IV laterally, presm've the alinement of the said platform P, and prevent its turning upon or rotating with the drum D.

It will i be seenthat my apparatus isrcomparativelv simple and cheap of construction, parts being strong and not liable to get out of order, and since the wear of frictional contact is reduced tothe minimum the device will sustain a maximum of use without replacement.

The large peripheralarea attained by the use of a single drum-or worm is of great advantage in that it enables me to use a thread of relatively great thickness and strength, as well as to reduce the grade or pitch of the same, and at the same time to make the distance between the convolutions sufcient to admit of the use of wheels of large diameter and wide tread. Furthermore, the use of the large hollow worm-drum enables me to arrange all the actuating parts within the drum, where they are isolated and protected against contact with extraneous objects, thus preventing injury to the parts and avoiding danger from contact therewith. n

I have herein shown my worm-drum as engaging with two diametrically-opposed series of wheels. It is obvious that it would be operative with one set, although two or more are desirable in order to properly balance and support the part-s, it being understood that where three or more vertical ser-ies of supporting-wheels are used they are arranged at equidistant points aroundfthe worm-drum.

vWhat I claim as my invention, and desire to secure by Letters Patent, i8.--

1. In an elevating device, the combination with the platform, of an electric motor thereon a driving-pinion on the armature-shaft of said motor intermediate gearing supported on the platform, and arranged to transmit mo-- tion from said driving-pinion to an annular rack, said rack integral with and upon the interior surface of a worm-drum, said wormdrum threaded peripherally for engagement with a series of vertically-arranged supporting-wheels, and the said vertically-arranged supporting-wheels, for the purpose described.

2. In an elevating' device, the combination with the platform, of an electric motor thereon, a driving-pinion upon the armature-shaft of said motor, intermediate gearing supported on the platform and arranged to transmit motion from said driving-pinion to an annular rack, said rack integral with and upon the interior surface o' a worm-drum, said wormmasas of said electric motor, interxiriediate gearing supported on the platform and arranged to transmit motion from said driving-pinion to an annular rack, said rack integral with and upon the interior 'surface of a worm-drum, said worm-drum threaded peripherally-for engagement with a series of vertically-arranged supporting-wheels, and the said verticallyarranged supporting-wheels, for the purpose described.

1L. In an elevating device, the combination with the platfo in, yof an electric motor thereon, a driving-piniai upon the armature-shaft of said motor, intermediate gearing supported upon the platform and arranged to transmit motion from said driving-pinion to an annular rack, said annular rack integral with and upon the interior surface of a worm-drum, said worm-drum formed with'a peripheral screw-thread way, vertically-arranged supporting-wheels for engaging with said screwthread wav on ktie worm-dru1n,an annular track on the interior of the worm-drum, and a series of rollers traveling on said annular track and supported upon the said platforgn, for the purpose described.

5. In an elevating device, the combination with the platform, of aneleetrie moborfthereon,.a driving-pinion upon the armature-shaft of said motor, intermediate gearing supported upon the platform and arranged to transmit motion from said driving-pinion to an annular rack, said annular rack integral with and upon the interior surface of a worm-drum said worm-drum formed with a peripheral screw-thread, way, vertically-arranged supporting-wheels for engaging with said screwthread way on the worm-drum, an inclined annulartrack on the interior of the worm-drum, and a series of conical rollers traveling on said annular track and supported upon the said platform, for the purpose described.

6. In an elevating device, the combination with the platfornnof an electric motor thereon, a driving-pinion upon the'armature-shaft of said motor, intermediate gearing supported upon the platform and arranged to transmit motion from said driving-pinion to an annular rack, said annular rack integral with and upon the interior surface of a worm-drum; said worm-drum formed with a peripheral screw-thread way, vertically-arranged supporting-wheels for engaging with said screwthread wa)T on the worm-drum, and vertical ways on said platform arranged to bear later- 'ally upon the said verticalwheels for the purpose set forth.

IIO

7 In an elevating device, the combination with the platform, of an electric motor thereon,v a driving-pinion upon the armature-shaft of said motor, intermediate gearing supported upon the platform and arranged to transmit motion from said driving-pinion to an annular rack, said annular rack integral with and upon the interior surface of a worm-drum; said Worm-drum formed with a peripheral screwthread Way, vertically-arranged supportingwheels for engaging with said screw-thread Way on the Worm-drum, an annular groove formed in the interior surface of said Wormdrum, and a series of horizontal rollers traveling in said annular groove and supported upon the said platform for the purpose described.

8. In an elevating device, the combination with the platform, of an electric motor thereon, a driving-pinion upon the armature-shaft of said motor, intermediate gearing supported upon the platform and arranged to transmit motion from said driving-pinion to an annular rack, said annular rack integral With and upon the interior surface of a Worm-drum, said Worm-drum formed with a peripheral screw-thread Way having an extension-rib, vertically-arranged wheels for engaging With the said screw-thread Way 'on the worm-drum, and a series of grooves formed in a stationary upright or uprights and arranged to receiveand supportthe said extension-ribs on the said peripheral screw-thread Ways on the Worm-drum, for the purpose described.

9. In an elevating device, the combination with the platform, of an electric motor thereon, a driving-pinion on the armature-shaft of said motor, intermediate gearing supported on said platform and arranged to transmit motion from said driving-pinion to an annular rack, said rack integral With and upon the interior Surface of a Worm-drum, said'wormdrum formed with a peripheral screw-thread Way, vertically-arranged wheels for engaging with said screw-thread Way on the Worm-'- drum, an inclined annular track on the interior of the Worm-drum, a series of conical rollers traveling on said annular track and supported on said platform, an annular groove' formed in the interior surface of said-wormdrum, and a series of horizontal rollers traveling in said annular groove and supported `upon said platform, for the purpose described. v

10. In an elevating device, the combination With the platform, of an electric motor thereon, a driving-pinion on the armature-shaft of said motor, intermediate gearing supported supported on said platform, an annular groove formed in the interior surface of said wormdrum, aseries of horizontal rollers traveling in said annular -groove and supported upon said platform, and vertical ways on said platform arranged to bear laterally upon the said vertical Wheels, for the purpose described.

ERNEST H. VOGEL.

Witnesses:

GEO. WM. MIATT, D. W. GARDNER. 

